diff --git a/frontend/admin/src/pages/MediaUploadPage.vue b/frontend/admin/src/pages/MediaUploadPage.vue
index f2b63a9..bef3b49 100644
--- a/frontend/admin/src/pages/MediaUploadPage.vue
+++ b/frontend/admin/src/pages/MediaUploadPage.vue
@@ -19,6 +19,10 @@ const currentFile = ref(null);
 const uploadHistory = ref([]);
 const STORAGE_KEY = 'media_upload_history';
 
+// Add max file size constant (100MB)
+const MAX_FILE_SIZE = 300 * 1024 * 1024;
+const MAX_FILE_SIZE_DISPLAY = '300MB';
+
 // Add computed for completed uploads
 const completedUploads = computed(() => {
     return uploadHistory.value.filter(item => item.status === 'completed');
@@ -78,10 +82,28 @@ const addToUploadQueue = (files) => {
     uploadQueue.value.push(...newFiles);
 };
 
+// Add file size check
+const checkFileSize = (file) => {
+    if (file.size > MAX_FILE_SIZE) {
+        toast.add({
+            severity: 'error',
+            summary: '错误',
+            detail: `文件大小超过限制 (最大 ${MAX_FILE_SIZE_DISPLAY})`,
+            life: 3000
+        });
+        return false;
+    }
+    return true;
+};
+
 const handleFiles = async (files) => {
-    addToUploadQueue(files);
-    if (!isUploading.value) {
-        processNextUpload();
+    // Filter out files that are too large
+    const validFiles = Array.from(files).filter(checkFileSize);
+    if (validFiles.length > 0) {
+        addToUploadQueue(validFiles);
+        if (!isUploading.value) {
+            processNextUpload();
+        }
     }
 };
 
@@ -294,6 +316,7 @@ onMounted(() => {
                             <i class="pi pi-cloud-upload text-6xl! text-gray-500 mb-4"></i>
                             <p class="text-gray-600 text-2xl! font-bold text-center mb-2">拖拽文件到此处或点击上传</p>
                             <p class="text-gray-400 text-sm text-center">支持: MP4, JPG, PNG, GIF, MP4, PDF, DOC</p>
+                            <p class="text-gray-400 text-sm text-center mt-1">单个文件最大 {{ MAX_FILE_SIZE_DISPLAY }}</p>
                         </div>
                     </div>